Removed all deprecated code

src/Form/EventInstanceRevisionDeleteForm.php

src/Form/EventInstanceRevisionRevertForm.php

src/Form/EventInstanceRevisionRevertTranslationForm.php

src/Form/EventSeriesRevisionDeleteForm.php

src/Form/EventSeriesRevisionRevertForm.php

src/Form/EventSeriesRevisionRevertTranslationForm.php

src/Form/FieldInheritanceDeleteForm.php

src/Form/FieldInheritanceForm.php